No. 4 Hard To Start/Long Crank/Erratic Start/Erratic Crank: Notes

WARNING: This page is about a different variant/trim than selected.

SYMPTOM CHART (HARD TO START/LONG CRANK/ERRATIC START/ERRATIC CRANK)

4	HARD TO START/LONG CRANK/ERRATIC START/ERRATIC CRANK
DESCRIPTION	Starter cranks engine at normal speed but engine requires excessive cranking time before starting. Battery is in normal condition.
POSSIBLE CAUSE	NOTE: If the ignition is not switched off (to LOCK or ACC) after the engine stalls, and then an engine restart is attempted, the PCM corrects the difference between CKP sensor and CMP sensor signals caused by engine stalling, which may result in more time needed to restart the engine. Vacuum leakage Poor fuel quality Low or dead battery Restriction in intake-air system Charging system malfunction PCM DTC is stored. Cooling system malfunction Ignition coil related wiring harness malfunction Ignition system malfunction Spark plug malfunction CKP sensor and teeth of crankshaft pulley malfunction Improper operation of drive-by-wire control system Excessive or insufficient fuel pressure Fuel pump relay or fuel pump circuit malfunction Restriction in fuel line Pressure regulator malfunction (built-into fuel pump unit) Fuel pump malfunction Fuel leakage from fuel system Purge solenoid valve malfunction MAF sensor malfunction Restriction in exhaust system EGR valve malfunction Starting system malfunction WARNING: The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before servicing the fuel system: Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel. Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injuries or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" described in this manual. (See BEFORE SERVICE PRECAUTION .) (See AFTER SERVICE PRECAUTION .) CAUTION: Disconnecting/connecting the quick release connector without cleaning it may cause damage to the fuel pipe and the quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.

HARD TO START/LONG CRANK/ERRATIC START/ERRATIC CRANK

DESCRIPTION

Starter cranks engine at normal speed but engine requires excessive cranking time before starting.
Battery is in normal condition.

POSSIBLE CAUSE

NOTE:

If the ignition is not switched off (to LOCK or ACC) after the engine stalls, and then an engine restart is attempted, the PCM corrects the difference between CKP sensor and CMP sensor signals caused by engine stalling, which may result in more time needed to restart the engine.

Vacuum leakage
Poor fuel quality
Low or dead battery
Restriction in intake-air system
Charging system malfunction
PCM DTC is stored.
Cooling system malfunction
Ignition coil related wiring harness malfunction
Ignition system malfunction
Spark plug malfunction
CKP sensor and teeth of crankshaft pulley malfunction
Improper operation of drive-by-wire control system
Excessive or insufficient fuel pressure
- Fuel pump relay or fuel pump circuit malfunction
- Restriction in fuel line
- Pressure regulator malfunction (built-into fuel pump unit)
- Fuel pump malfunction
Fuel leakage from fuel system
Purge solenoid valve malfunction
MAF sensor malfunction
Restriction in exhaust system
EGR valve malfunction
Starting system malfunction

WARNING: The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before servicing the fuel system:

Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel.
Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injuries or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" described in this manual. (See BEFORE SERVICE PRECAUTION .) (See AFTER SERVICE PRECAUTION .)

CAUTION:

Disconnecting/connecting the quick release connector without cleaning it may cause damage to the fuel pipe and the quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.